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2 years ago

2x -4y=20 X=4 System of equations

Mathematics

1 answer:

Gennadij [26K]2 years ago

3 0

Answer:

Step-by-step explanation:

2(4) - 4y = 20

8 - 4y = 20

-4y = 12

y = -3

x = 4

(4, -3)

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(1/3+9)*(8-3) in a fraction

neonofarm [45]

1/3+9=(9 1/3)
8-3= (5)
9*5=45 add the 1/3 back in
45 1/3 for the fraction take 45*3=135+1= 136/3
136/3 is the answer

6 0

3 years ago

A car is purchase at $20000.The value of the car depreciates at 12.5% a year. What will the value of the car be to the nearest c

Rudik [331]

Answer: $4603.82

Step-by-step explanation:

Given

The initial cost of a car is $P=\$20,000$

The rate of depreciation is $i=12.5\%$

Depreciated value after n years is given by

$\Rightarrow P(1-\frac{i}{100})^n\quad \text{where n=no. of years}$

Value after 11 years

$\Rightarrow 20,000(1-\frac{12.5}{100})^{11}\\\\\Rightarrow 20000(0.875)^{11}=\$4603.82$

6 0

2 years ago

Alex saved x dollars.

steposvetlana [31]

Answer:
Ethan = 1.(3x)

Step-by-step explanation:
Let's split "Ethan saved 1/3 more than that"
That = x
So, Ethan saved 1/3 more than x
Meaning that Ethan = x + 1/3x
Combine like terms
Ethan = 1 1/3x
which equals to
Ethan = 1.(3x)

Hope this helps :)
Have a great day

4 0

2 years ago

1. The Royals softball team played 125 games and won 60 of them. What percent of the games did they lose? A. 48% B. 52% C. 65% D

Sauron [17]

Answer:

52% or B.

Step-by-step explanation:

3 0

3 years ago

If one zero of the polynomial (a^2+9)x^2+13x+6a is the reciprocal of the other, find the value of a.

mihalych1998 [28]

Answer: a^2x^2+9x^2+13x+6a

Step-by-step explanation:

(a^2+9) x^2+ 13x +6a

x^2(a^2+9)+13x+6a

Expand:x^2(a^2+9): a^2 x^2+9^2

x^2 a^2 +x^2*9

a^2 x^2+9x^2

a^2 x^2+9x^2+13x+6a

5 0

2 years ago